Durability of Sodium Alginate-Modified Enzyme-Induced Calcium Precipitation (EICP) Treated Sands

Biological techniques for enhancing soil quality have gained attention as sustainable and long-lasting solutions for soil improvement. One such technique is enzyme-induced calcium precipitation (EICP), which involves the use of ureolysis to precipitate calcium carbonate (CaCO3) in soil. This paper explores the potential of EICP as a soil improvement technique and investigates the use of sodium alginate (SA) biopolymer to enhance its effectiveness. The durability of SA- assisted EICP-treated sand is assessed through various durability tests, including wetting-drying cycles, sulfate resistance, and the effects of curing and drying temperatures. The results provide insights into the long-term performance of polymer-assisted EICP soil treatment.